[INFO] cloning repository https://github.com/chanq-io/vultan
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chanq-io/vultan" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchanq-io%2Fvultan", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchanq-io%2Fvultan'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b71df5e451d7ce83e1eed326a042202bc11e66d4
[INFO] checking chanq-io/vultan against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchanq-io%2Fvultan" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chanq-io/vultan on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chanq-io/vultan
[INFO] finished tweaking git repo https://github.com/chanq-io/vultan
[INFO] tweaked toml for git repo https://github.com/chanq-io/vultan written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/chanq-io/vultan already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mockall_derive v0.11.2
[INFO] [stderr]   Downloaded rstest v0.15.0
[INFO] [stderr]   Downloaded snafu-derive v0.7.2
[INFO] [stderr]   Downloaded mockall v0.11.2
[INFO] [stderr]   Downloaded mockall_double v0.3.0
[INFO] [stderr]   Downloaded rstest_macros v0.14.0
[INFO] [stderr]   Downloaded snafu v0.7.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7bd40b12c6ecc3b6ea447b111090dd96b67635f34c4d1d78ea1e53492f37cb2c
[INFO] running `Command { std: "docker" "start" "-a" "7bd40b12c6ecc3b6ea447b111090dd96b67635f34c4d1d78ea1e53492f37cb2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bd40b12c6ecc3b6ea447b111090dd96b67635f34c4d1d78ea1e53492f37cb2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bd40b12c6ecc3b6ea447b111090dd96b67635f34c4d1d78ea1e53492f37cb2c", kill_on_drop: false }`
[INFO] [stdout] 7bd40b12c6ecc3b6ea447b111090dd96b67635f34c4d1d78ea1e53492f37cb2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a912b44a61166266b47532c9facc8b5a0334d2262f9cf3f1b60070e332a77c73
[INFO] running `Command { std: "docker" "start" "-a" "a912b44a61166266b47532c9facc8b5a0334d2262f9cf3f1b60070e332a77c73", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling semver v1.0.14
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking predicates-core v1.0.3
[INFO] [stderr]     Checking futures-sink v0.3.25
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking futures-io v0.3.25
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking termtree v0.2.4
[INFO] [stderr]    Compiling rstest_macros v0.14.0
[INFO] [stderr]     Checking predicates-tree v1.0.5
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking downcast v0.11.0
[INFO] [stderr]     Checking fragile v1.2.1
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking iana-time-zone v0.1.48
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking futures-timer v3.0.2
[INFO] [stderr]     Checking len-trait v0.6.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking predicates v2.1.1
[INFO] [stderr]    Compiling futures-macro v0.3.25
[INFO] [stderr]    Compiling mockall_derive v0.11.2
[INFO] [stderr]    Compiling snafu-derive v0.7.2
[INFO] [stderr]    Compiling mockall_double v0.3.0
[INFO] [stderr]     Checking snafu v0.7.2
[INFO] [stderr]     Checking mockall v0.11.2
[INFO] [stderr]     Checking futures-executor v0.3.25
[INFO] [stderr]     Checking futures v0.3.25
[INFO] [stderr]     Checking rstest v0.15.0
[INFO] [stderr]     Checking chrono v0.4.22
[INFO] [stderr]     Checking ron v0.8.0
[INFO] [stderr]     Checking vultan v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `IntervalCoefficients` is imported redundantly
[INFO] [stdout]   --> src/state/hand.rs:90:48
[INFO] [stdout]    |
[INFO] [stdout] 88 |     use super::*;
[INFO] [stdout]    |         -------- the item `IntervalCoefficients` is already imported here
[INFO] [stdout] 89 |     use crate::state::card::revision_settings::test_tools::make_expected_revision_settings;
[INFO] [stdout] 90 |     use crate::state::{card::RevisionSettings, deck::IntervalCoefficients};
[INFO] [stdout]    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/state/card.rs:183:43
[INFO] [stdout]     |
[INFO] [stdout] 183 |             .with(eq(expected_filepath_arg.clone()))
[INFO] [stdout]     |                                           ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.57s
[INFO] running `Command { std: "docker" "inspect" "a912b44a61166266b47532c9facc8b5a0334d2262f9cf3f1b60070e332a77c73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a912b44a61166266b47532c9facc8b5a0334d2262f9cf3f1b60070e332a77c73", kill_on_drop: false }`
[INFO] [stdout] a912b44a61166266b47532c9facc8b5a0334d2262f9cf3f1b60070e332a77c73
[INFO] checking chanq-io/vultan against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchanq-io%2Fvultan" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chanq-io/vultan on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chanq-io/vultan
[INFO] finished tweaking git repo https://github.com/chanq-io/vultan
[INFO] tweaked toml for git repo https://github.com/chanq-io/vultan written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/chanq-io/vultan already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b1eeb1420412b17e3f138c1c625d149544287a4271967eef835825ca8f7f75ed
[INFO] running `Command { std: "docker" "start" "-a" "b1eeb1420412b17e3f138c1c625d149544287a4271967eef835825ca8f7f75ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b1eeb1420412b17e3f138c1c625d149544287a4271967eef835825ca8f7f75ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1eeb1420412b17e3f138c1c625d149544287a4271967eef835825ca8f7f75ed", kill_on_drop: false }`
[INFO] [stdout] b1eeb1420412b17e3f138c1c625d149544287a4271967eef835825ca8f7f75ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a83377d3c582496beeac910bc333e7f9c9b08ae8124b1e189877949636f9c70
[INFO] running `Command { std: "docker" "start" "-a" "0a83377d3c582496beeac910bc333e7f9c9b08ae8124b1e189877949636f9c70", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling semver v1.0.14
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking predicates-core v1.0.3
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking futures-sink v0.3.25
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking futures-io v0.3.25
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking termtree v0.2.4
[INFO] [stderr]     Checking predicates-tree v1.0.5
[INFO] [stderr]    Compiling rstest_macros v0.14.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking iana-time-zone v0.1.48
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking fragile v1.2.1
[INFO] [stderr]     Checking downcast v0.11.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking futures-timer v3.0.2
[INFO] [stderr]     Checking len-trait v0.6.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.6.0/src/exec.rs:848:13
[INFO] [stdout]     |
[INFO] [stdout] 848 | /             match dfa::Fsm::reverse(
[INFO] [stdout] 849 | |                 &self.ro.dfa_reverse,
[INFO] [stdout] 850 | |                 self.cache.value(),
[INFO] [stdout] 851 | |                 false,
[INFO] [stdout] ...   |
[INFO] [stdout] 862 | |                 Quit => return Some(Quit),
[INFO] [stdout] 863 | |             };
[INFO] [stdout]     | |_____________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `regex` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0a83377d3c582496beeac910bc333e7f9c9b08ae8124b1e189877949636f9c70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a83377d3c582496beeac910bc333e7f9c9b08ae8124b1e189877949636f9c70", kill_on_drop: false }`
[INFO] [stdout] 0a83377d3c582496beeac910bc333e7f9c9b08ae8124b1e189877949636f9c70